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Finding the Fourth Proportional to 389,883.40, 583,529.10 and 282,963.40

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Solution

The fourth proportional to 389,883.40, 583,529.10 and 282,963.40 is: 423,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,883.40 : 583,529.10 = 282,963.40 : x
  2. Step 2: Convert to fraction form
    389,883.40/583,529.10 = 282,963.40/x
  3. Step 3: Cross multiply
    389,883.40x = 583,529.10 × 282,963.40
  4. Step 4: Simplify right side
    389,883.40x = 165,117,378,134.94
  5. Step 5: Solve for x
    x = 165,117,378,134.94/389,883.40
  6. Step 6: Final answer
    x = 423,504.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.